Flexible drainage trap
The present disclosure generally relates to flexible drainage trap assemblies and methods for constructing and installing such drainage traps. In one exemplary embodiment, a flexible drainage trap assembly includes a plumbing fixture connector, a discharge joint, and a trap portion connecting the plumbing fixture connector and discharge joint. The trap portion is shaped in such a way that it is operable to retain a pool of water inside the trap portion. The disclosed flexible drainage assemblies include a flexible portion that has a substantially smooth inner surface.
Latest Coflex S.A. de C.V. Patents:
This patent application relates and claims priority to provisional patent application 61/040,977, filed Mar. 31, 2008, which is herein incorporated by reference for all purposes.
TECHNICAL FIELDThe present disclosure relates generally to drainage traps, and more particularly to flexible drainage trap assemblies including a flexible portion that has a substantially-smooth inner surface, and methods for constructing and installing such flexible drainage assemblies.
BACKGROUNDIn the plumbing industry, drainage traps are fixtures having a U-, J-, S-, or P-shaped portion and are used to trap fumes, gases, and odors within a drainage piping system. Most plumbing fixtures, such as bathroom sinks, kitchen sinks, bath tubs and water closets, include a drainage trap. A drainage trap may either be an integral part of the plumbing fixture or a separate fixture that can be releasably coupled to the plumbing fixture. In the present application, “internal traps” should be understood to be drainage traps that are an integral part of the plumbing fixture, and “external traps” should be understood to be drainage traps that can be releasably coupled to the plumbing fixture. It is to be appreciated that external traps are more common than internal traps, but in any embodiment described herein, external and internal traps can be substituted for each other.
Once the drainage trap is installed, water is flushed down the plumbing fixture, and the shape of the drainage trap allows a small pool of water to be retained within the drainage trap. The pool of water in the drainage trap functions as a seal that prevents the fumes, gases, and odors from escaping into the external living space in a building.
BRIEF SUMMARYOne embodiment disclosed in the present disclosure relates to a drainage trap assembly for maintaining a water seal that prevents gases in a drainage piping system from escaping. The drainage trap assembly includes a trap having first and second end portions and a trap portion between the first and second end portions, the trap being operable to retain a pool of water in the trap portion. The drainage trap assembly also includes a plumbing fixture connector coupled to the first end portion of the trap, the plumbing fixture connector being operable to be connected to a discharge of a plumbing fixture. The drainage trap assembly further includes a discharge joint coupled to the second end portion of the trap, the discharge joint being operable to be connected to a drainage pipe output. The discharge joint comprises a flexible hose having a substantially smooth inner surface. In some embodiments, the discharge joint further comprises an elbow connecting a first end of the flexible hose to the second end portion of the trap, and a drainage connector operable to connect a second end of the flexible hose to the drainage pipe output.
Another embodiment of the drainage trap assemblies disclosed in the present disclosure includes a trap having first and second end portions and a trap portion between the first and second end portions, the trap being operable to retain a pool of water in the trap portion. The drainage trap assembly also includes a plumbing fixture connector operable to be connected to a discharge of a plumbing fixture, and a flexible hose connecting the plumbing fixture connector and the trap. A first end of the flexible hose is coupled to the plumbing fixture connector, and a second end of the flexible hose is coupled to the first end portion of the trap. Furthermore, the inner surface of the flexible hose is substantially smooth. The drainage trap also includes a discharge joint coupled to the second end of the trap, the discharge joint being operable to be connected to a drainage pipe output.
In some embodiments of the drainage trap assembly, the first end portion of the trap comprises a Y-fitting having first and second joint portions, and the second end of the flexible hose is mounted on the first joint portion. The drainage trap assembly further comprises a second plumbing fixture connector operable to be connected to a second discharge of the plumbing fixture or a discharge of a second plumbing fixture, and a second flexible hose connecting the second plumbing fixture connector and the second joint portion of the trap. A first end of the second flexible hose is coupled to the second plumbing fixture connector, and a second end of the second flexible hose is coupled to the second joint portion of the Y-fitting of the trap. Additionally, the inner surface of the second flexible hose is substantially smooth.
Related methods for constructing and installing the disclosed drainage trap assembly between plumbing fixture discharges and drainage outlets are also disclosed herein.
Reference is now made to the following descriptions taken in conjunction with the accompanying drawings.
Various aspects of a flexible drainage trap assembly and related methods for installing a flexible drainage trap assembly according to the present disclosure are described. It is to be understood, however, that the following explanation is merely exemplary in describing the devices and methods of the present disclosure. Accordingly, any number of reasonable and foreseeable modifications, changes and substitutions are contemplated without departing from the spirit and scope of the present disclosure.
The installation of the rigid drainage trap 100 between the discharge of the plumbing fixture and the drainage pipe output can be difficult. The alignment between the discharge of the plumbing fixture and the drainage pipe output can vary significantly because the plumbing fixtures can have a wide variety of designs. For example, bathroom sinks can be designed to be seated below or on the top of the counter. The difference in designs may lead to the plumbing fixtures having discharges in different positions, and, consequently, connecting the discharges of different plumbing fixtures to the drainage pipe output may require drainage traps of various dimensions. Furthermore, some plumbing fixtures have a plurality of discharges, such as a double kitchen sink.
To improve the ease of installing drainage traps, some drainage traps 100 have been made more flexible by constructing the trap 12 using a flexible material. To connect such a flexible trap 12 to the tailpiece 10 and discharge joint 14 of the drainage trap 100, hose clamps (not shown) are positioned around end portions of the flexible trap 12 and manually tightened. One disadvantage of the flexible trap 12 is that the hose clamps could be difficult to install if there is a lack of room around the plumbing fixture for handling tools to install the clamps. Moreover, another disadvantage of the flexible trap 12 is that it provides only limited flexibility due to the inherent shape of the flexible trap 12.
Some other drainage traps 100 have a corrugated portion. While the corrugated portion provides some flexibility, the uneven inner surface of the corrugated portion can trap and accumulate organic wastes. The accumulation of organic wastes can consequently lead to problems such as excessive bacteria and fungus growth and the clogging of the drainage trap.
Referring to
The plumbing fixture connector 52 is coupled to the first end portion 70 of the trap 54, and the flexible discharge joint 56 is coupled to the second end portion 72 of the trap 54. The plumbing fixture connector 52 can be a tailpiece or an adapter that is operable to be connected to a discharge of a plumbing fixture (not shown) and provide a conduit from the plumbing fixture to the trap 54. In some embodiments, the plumbing fixture connector 52 may include a combination of tailpiece and adapter. The flexible discharge joint 56 is operable to be connected to a drainage pipe output (not shown) and provides a conduit from the trap 54 to the drainage pipe output.
The flexible discharge joint 56 comprises a flexible hose 60 having a substantially smooth inner surface 64. The substantially smooth inner surface 64 offers the advantage of not being susceptible to accumulating organic waste inside the flexible hose 60 since no grooves are exposed on its interior surface as found on typical corrugated piping. The flexible hose 60 can be made of any flexible material known in the art to impart flexibility to the discharge joint 56, including any thermoplastic rubber, any engineered polymer, or any chemically treated materials capable of resisting chemicals such as chlorides and acids. The flexible hose 60 also may be resistant to organic gases and fungus attacks. In one exemplary embodiment, the flexible hose 60 is made from a polyvinyl chloride (PVC) compound.
In some embodiments, the outer surface of the flexible hose 60 may be configured to have a corrugated portion to further improve the flexibility of the flexible hose 60. The flexible hose 60 may be reinforced by any suitable means known in the art to improve its strength. In the exemplary embodiment illustrated in
In the embodiments shown in
In the illustrated embodiment, the elbow 58 has a central opening 80 defined therethrough, and an outer wall 82. The outer wall 82 has a circumferential slot 84 defined therein, which is operable to receive the first end portion 76 of the flexible hose 60. When the end portion 76 is fitted and received in the circumferential slot 84, the friction between the outer wall 82 and the end portion 76 allows the elbow 58 and flexible 60 to be securely and hermetically coupled. As such, the elbow 58 and drainage connector 62 are coupled to the flexible hose 60 by pressure without any need of tooling, solvent, or cement. The pressure coupling of the elbow 58 and drainage connector 62 to the flexible hose 60 allows an installer to dismantle the discharge joint 56 as many times as desired by pulling them apart. These parts of the discharge joint 60 may be reassembled easily by pushing them together. In other embodiments in which the elbow 58, flexible hose 60, and the drainage connector 62 are integrally molded into one unitary part, the possibility of leakage is substantially reduced or eliminated, and the installation of the drainage trap assembly 200 is simplified. However, accessibility to the inside of certain portions may thereby be limited, thus leaving to the installer which embodiment better suits his needs.
In one exemplary embodiment of an installation, the flexible drainage trap assembly 200 is installed by first connecting the plumbing fixture connector 52 to the discharge of a plumbing fixture (not shown). Before connecting the discharge joint 56 to the drainage pipe outlet (not shown), the flexible hose 60 can be bent to adjust the orientation of the discharge joint 56 so that it matches the alignment of the drainage pipe outlet. Once the discharge joint 56 and the drainage pipe outlet are properly aligned, they can be connected to complete the installation. It is to be appreciated that the flexible drainage trap assembly 200 provides a high degree of adjustment during installation, thus accommodating various misalignments between plumbing fixture discharges and discharge pipes. In a particular embodiment, aligning the discharge joint 56 and the drainage pipe outlet may require disassembling the discharge joint 56 and cutting away a piece of the flexible hose 60 to make it shorter. The discharge joint 56 is then reassembled and aligned before being connected to the drainage pipe outlet. In another embodiment, the drainage pipe outlet may be too distant from the drainage trap assembly 200 and the flexible hose 60 can be replaced with a longer hose. In either such embodiment, the quick-connectability of the flexible hose 60 to other components as described above allows for quick, on-site adjustments to be made during installation.
Turning now to
Like the flexible hose 60 described above, the flexible hose 96 includes an inner surface (not shown) that is substantially smooth, and can be made of any flexible material known in the art to impart flexibility to the drainage trap assembly 300. In the embodiment shown in the
Shown in
In some embodiments, the first end portion 98 of the trap 92 comprises a Y-fitting 112 as shown in
The Y-fitting 112 also includes at least one sealing member 120 extending radially and outwardly from the outer surface of the first and second joint portions 114 and 116. The sealing member 120 cooperates with the inner smooth surface of the flexible hose 96 to provide a substantially water-proof seal. The sealing member 120 may have various cross-sectional profiles depending on the application and design of the drainage trap assembly 300. In some embodiments, a trapezoidal profile as shown in
It is to be appreciated that the securing mechanism and the sealing mechanism described above can be implemented in any embodiments described herein in accordance with the principles of the present disclosure. For example, in some embodiments, the first end portion 98 in
As shown in
Also, in some embodiments, a longitudinal axis of the first joint portion 114 and the longitudinal axis of the outlet portion 150 define a first plane, a longitudinal axis of the second joint portion 116 and the longitudinal axis of the outlet portion 150 define a second plane, and the first and second planes are different. In some embodiments, a longitudinal edge of the first joint portion 114 extends parallel to the longitudinal axis of the first joint portion 114, and a longitudinal edge of the second joint portion 116 extends parallel to the longitudinal axis of the second joint portion 116.
The first end 122 of the plumbing fixture connector 90 can be coupled to the first end 104 of flexible hose 96 using any coupling mechanism know in the art. In some embodiments, the first end 122 may include the threads 118 as described above for securing the flexible hose 96. Additionally, in some embodiments, the first end 122 also may include the sealing member 120 as described above for providing a substantially water-proof seal.
Referring back to
It should be appreciated that the breadth and scope of the invention(s) should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents. Moreover, the above advantages and features are provided in described embodiments, but shall not limit the application of the claims to processes and structures accomplishing any or all of the above advantages.
Additionally, the section headings herein are provided for consistency with the suggestions under 37 CFR 1.77 or otherwise to provide organizational cues. These headings shall not limit or characterize the invention(s) set out in any claims that may issue from this disclosure. Specifically and by way of example, although the headings refer to a “Technical Field,” the claims should not be limited by the language chosen under this heading to describe the so-called technical field. Further, a description of a technology in the “Background” is not to be construed as an admission that technology is prior art to any invention(s) in this disclosure. Neither is the “Brief Summary” to be considered as a characterization of the invention(s) set forth in the claims found herein. Furthermore, any reference in this disclosure to “invention” in the singular should not be used to argue that there is only a single point of novelty claimed in this disclosure. Multiple inventions may be set forth according to the limitations of the multiple claims associated with this disclosure, and the claims accordingly define the invention(s), and their equivalents, that are protected thereby. In all instances, the scope of the claims shall be considered on their own merits in light of the specification, but should not be constrained by the headings set forth herein.
Claims
1. A drainage trap assembly for maintaining a water seal, the drainage trap assembly comprising:
- a trap having first and second end portions and a trap portion between the first and second end portions, the trap being operable to retain a pool of water in the trap portion;
- a plumbing fixture connector operable to be connected to a discharge of a plumbing fixture;
- a Y-fitting having first and second joint portions and an outlet portion, the outlet portion operable to be connected to the first end portion of the trap, the first joint portion, the second joint portion, and the outlet portion of the Y-fitting defining first, second, and third longitudinal axes respectively, the first and third longitudinal axes defining a first plane, and the second and third longitudinal axes defining a second plane different from the first plane;
- a flexible hose connecting the plumbing fixture connector and the Y-fitting, wherein a first end of the flexible hose is coupled to the plumbing fixture connector, and a second end of the flexible hose is coupled to the first joint portion of the Y-fitting, further wherein the inner surface of the flexible hose is substantially smooth; and
- a discharge joint coupled to the second end portion of the trap, the discharge joint being operable to be connected to a drainage pipe output,
- wherein the first joint portion of the Y-fitting comprises at least one sealing member extending radially and outwardly from the outer surface of the first joint portion, and further wherein the second end of the flexible hose is mounted on the first joint portion of the Y-fitting, such that the at least one sealing member is in contact with the smooth inner surface of the flexible hose to provide a substantially water-proof seal with a friction fit.
2. The drainage trap assembly of claim 1, wherein the flexible hose comprises a plurality of reinforcement rings extending radially and outwardly from the outer surface of the flexible hose.
3. The drainage trap assembly of claim 2, wherein the first joint portion of the Y-fitting comprises a securing mechanism operable to engage the plurality of reinforcement rings when the second end of the flexible hose is mounted on the first joint portion of the Y-fitting.
4. The drainage trap assembly of claim 3, wherein the securing mechanism comprises threads operable to mate with the plurality of reinforcement rings.
5. The drainage trap assembly of claim 2, wherein the first end of the plumbing fixture connector comprises a securing mechanism operable to engage the plurality of reinforcement rings when the first end of the flexible hose is mounted on the first end of the plumbing fixture connector.
6. The drainage trap assembly of claim 5, wherein the securing mechanism comprises threads operable to mate with the plurality of reinforcement rings.
7. The drainage trap assembly of claim 1, wherein the first end portion of the trap includes the Y-fitting having the first and second joint portions, and the second end of the flexible hose is mounted on the first joint portion, and wherein the drainage trap assembly further comprises:
- a second plumbing fixture connector operable to be connected to a second discharge of the plumbing fixture or a discharge of a second plumbing fixture;
- a second flexible hose connecting the second plumbing fixture connector and the second joint portion of the trap, wherein a first end of the second flexible hose is coupled to the second plumbing fixture connector, and a second end of the second flexible hose is coupled to the second joint portion of the Y-fitting, further wherein the inner surface of the second flexible hose is substantially smooth.
8. The drainage trap assembly of claim 7, wherein the second plumbing fixture is a waste disposal unit.
9. The drainage trap assembly of claim 7, wherein the Y-fitting comprises an outlet portion, the outlet portion having a longitudinal axis, and the first joint portion and the longitudinal axis of the outlet portion form an acute angle.
10. The drainage trap assembly of claim 9, wherein the acute angle is between 25 to 65 degrees.
11. The drainage trap assembly of claim 10, wherein the acute angle is 45 degrees.
12. The drainage trap assembly of claim 1, wherein the plumbing fixture connector comprises first and second ends, the first and second ends having first and second longitudinal axes, respectively, and further wherein the first and second ends are bent relative to each other such that the first and second axes form an acute angle.
13. The drainage trap assembly of claim 12, wherein the acute angle formed by the first and second axes is between 15 to 45 degrees.
14. The drainage trap assembly of claim 13, wherein the acute angle formed by the first and second axes is 32 degrees.
15. The drainage trap assembly of claim 1, wherein the first end of the plumbing fixture connector comprises at least one sealing member extending radially and outwardly from the outer surface of the first end, and further wherein the first end of the flexible hose is mounted on the first end of the plumbing fixture connector, such that the at least one sealing member cooperates with the inner smooth surface of the flexible hose to provide a substantially water-proof seal.
16. A method for installing a drainage trap between the discharge of a plumbing fixture and a drainage pipe outlet, the method comprising:
- assembling a drainage trap comprising a trap, a Y-fitting having an outlet portion connecting to the trap, a plumbing fixture connector, a flexible hose connecting the plumbing fixture connector to a first joint portion of the Y-fitting, and a discharge joint coupled to a second end portion of the trap, wherein the flexible hose has a substantially smooth inner surface;
- connecting the plumbing fixture connector to the discharge of the plumbing fixture; and
- connecting the discharge joint to the drainage pipe outlet, wherein
- the first joint portion of the Y-fitting, a second joint portion of the Y-fitting, and the outlet portion of the Y-fitting define first, second, and third longitudinal axes respectively,
- the first and third longitudinal axes define a first plane,
- the second and third longitudinal axes define a second plane different from the first plane,
- the first joint portion of the Y-fitting comprises at least one sealing member extending radially and outwardly from the outer surface of the first joint portion, and
- an end of the flexible hose is mounted on the first joint portion of the Y-fitting, such that the at least one sealing member is in contact with the smooth inner surface of the flexible hose to provide a substantially water-proof seal with a friction fit.
17. The method of claim 16, wherein the plumbing fixture connector comprises first and second ends, and the first and second ends are bent relative to each other, and further wherein the connecting the plumbing fixture connector to the discharge of the plumbing fixture further comprises first loosely connecting the plumbing fixture connector to the discharge of the plumbing fixture, and then tightly securing the plumbing fixture connector to the discharge of the plumbing fixture after the discharge joint has been connected to the drainage pipe outlet.
18. A plumbing conduit assembly comprising:
- a Y-fitting having first and second joint portions and an outlet portion;
- a first flexible hose having an end portion coupled to the first joint portion; and
- a second flexible hose having an end portion coupled to the second joint portion;
- wherein each of the first and second flexible hoses comprises a substantially smooth inner surface;
- wherein the first joint portion, the second joint portion, and the outlet portion of the Y-fitting, define first, second, and third longitudinal axes, respectively, and both the first and second longitudinal axes are each oriented at an oblique angle relative to the third longitudinal axis;
- wherein the first and second flexible hoses each comprise a second end portion coupled to a plumbing fixture connector;
- wherein the first and third longitudinal axes define a first plane and the second and third longitudinal axes define a second plane different from the first plane,
- wherein the first joint portion of the Y-fitting comprises at least one sealing member extending radially and outwardly from the outer surface of the first joint portion; and
- wherein the end portion of the flexible hose is mounted on the first joint portion of the Y-fitting, such that the at least one sealing member is in contact with the smooth inner surface of the flexible hose to provide a substantially water-proof seal with a friction fit.
19. The plumbing conduit assembly of claim 18, wherein the first and third longitudinal axes form an acute angle, φ.
20. The plumbing conduit assembly of claim 19, wherein the acute angle, φ, is between 25-65 degrees.
21. The plumbing conduit assembly of claim 20, wherein the acute angle, φ, is 45 degrees.
22. The plumbing conduit assembly of claim 18, wherein the second and third longitudinal axes form an acute angle, σ.
23. The plumbing conduit assembly of claim 22, wherein the acute angle, σ, is between 25-65 degrees.
24. The plumbing conduit assembly of claim 23, wherein the acute angle, σ, is 45 degrees.
25. The plumbing conduit assembly of claim 22, wherein the first and third longitudinal axes form an acute angle, φ.
26. The plumbing conduit assembly of claim 25, wherein φ and σ are the same.
27. The plumbing conduit assembly of claim 18, wherein a longitudinal edge of the first joint portion extends parallel to the first longitudinal axis, and a longitudinal edge of the second joint portion extends parallel to the second longitudinal axis.
28. The plumbing conduit assembly of claim 18, wherein each of the first and second flexible hoses comprises an outer surface having a plurality of reinforcement rings extending radially and outwardly therefrom.
29. The drainage trap assembly of claim 1, wherein
- an opening of the first joint portion of the Y-fitting includes a first central axis,
- an opening of the outlet portion of the Y-fitting includes a second central axis, and
- the first and second central axes intersect within the Y-fitting.
30. The drainage trap assembly of claim 29, wherein
- an opening of the second joint portion of the Y-fitting includes a third central axis, and
- the second and third central axes intersect within the Y-fitting.
2302617 | November 1942 | Little |
2567165 | September 1951 | Buskirk |
2644543 | July 1953 | Russell |
2766461 | October 1956 | Zinkil |
2817094 | December 1957 | Lessley |
2987329 | June 1961 | Barton |
3011177 | December 1961 | Haughey |
3860978 | January 1975 | Wirth |
3891007 | June 1975 | Kleykamp |
3967324 | July 6, 1976 | Olive |
4081190 | March 28, 1978 | Itzler |
4151864 | May 1, 1979 | Thurman |
4173989 | November 13, 1979 | Prest |
4516278 | May 14, 1985 | Lamond |
4754781 | July 5, 1988 | Jan de Putter |
4846510 | July 11, 1989 | Mikol |
4919462 | April 24, 1990 | Matsui et al. |
5071170 | December 10, 1991 | Panella |
5230109 | July 27, 1993 | Zaccai et al. |
6641177 | November 4, 2003 | Pinciaro |
1087532 | October 1980 | CA |
188515 | March 1965 | DE |
1784665 | January 1972 | DE |
0913611 | June 1999 | EP |
1329561 | July 2003 | EP |
8008 | October 1998 | RU |
- PCT/IB2009/005483, International Search Report and The Written Opinion of the International Searching Authority mailed Oct. 22, 2009.
- European Search Report, EP09728314.7 dated Mar. 4, 2013.
Type: Grant
Filed: Mar 31, 2009
Date of Patent: Jan 7, 2014
Patent Publication Number: 20100024120
Assignee: Coflex S.A. de C.V.
Inventors: Eduardo Coronado (San Pedro Garza Garcia), Mauricio Coronado (San Pedro Garza Garcia), Jorge Sada (San Pedro Garza Garcia), Humberto Flores-Villarreal (San Nicolas de los Garza), Javier Canales (Monterrey)
Primary Examiner: Gregory Huson
Assistant Examiner: Lauren Heitzer
Application Number: 12/415,799
International Classification: E03C 1/12 (20060101);